Incluye referencias bibliográficas e índice. CONTENIDO: Introduction to the Working Group II Fourth Assessment Report -- Summary for policymakers; Technical summary. Assessment of observed changes and responses in natural and managed systems -- New assessment methodologies and the characterisation of future conditions -- Fresh water resources and their management -- Ecosystems, their properties, goods and services -- Food, fibre and forest products -- Coastal systems and low-lying areas -- Industry, settlement and society -- Human health -- Africa -- Asia -- Australia and New Zealand -- Europe -- Latin America -- North America -- Polar regions (Arctic and Antarctic) -- Small islands -- Assessment of adaptation practices, options, constraints and capacity -- Inter-relationships between adaptation and mitigation -- Assessing key vulnerabilities and the risk from climate change -- Perspectives on climate change and sustainability -- Cross-chapter case studies. Appendix I. Glossary -- Appendix II. Contributors to the IPCC WGII Fourth Assessment Report -- Appendix III. Reviewers of the IPCC WGII Fourth Assessment Report -- Appendix IV. Acronyms -- Appendix V. Permissions to publish -- Index; CD-ROM.